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^(n)c_(r)+^(n)c_(r-1)

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Show that .^(n)C_(r)+.^(n-1)C_(r-1)+.^(n-1)C_(r-2)=.^(n+1)C_(r) .

IF ""^((n+1))C_((r+1)): ""^(n)C_(r) : ""^((n-1))C_((r-1))=11:6:3 then (n,r)=

.^(n-1)C_(r)+^(n-1)C_(r-1)=

If .^(n+1)C_(r+1):^(n)C_(r):^(n-1)C_(r-1)=11:6:3 , find the values of n and r.

If .^(n+1)C_(r+1):^(n)C_(r):^(n-1)C_(r-1)=11:6:3 , find the values of n and r.

If .^(n+1)C_(r+1):^(n)C_(r):^(n-1)C_(r-1)=11:6:3 , find the values of n and r.

If .^(n+1)C_(r+1):^(n)C_(r):^(n-1)C_(r-1)=11:6:3 , find the values of n and r.

If ^n+1C_(r+1) : ^n C_r : ^(n-1)C_(r-1)=11 :6:3, then n r =

.^((n-1)C_(r) + ^((n-1)) C_((r-1)) is